Tiny clarification to default cache behavior (#17898)

Author: angelampcosta

src/content/docs/cache/concepts/default-cache-behavior.mdx

@@ -31,7 +31,7 @@ When [Origin Cache Control](/cache/concepts/cache-control/) is enabled on an Ent
 
 ## Default cached file extensions
 
-Cloudflare only caches based on file extension and not by MIME type. The Cloudflare CDN does not cache HTML or JSON by default. Additionally, Cloudflare caches a website’s robots.txt.
+Cloudflare only caches based on file extension and not by MIME type. The Cloudflare CDN does not cache HTML or JSON by default. Additionally, by default Cloudflare caches a website's robots.txt.
 
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